Abstract

Decreasing mammography capacity in the southern United States, 2002-2008
Track: Health and Human Services
Authors: Jan Eberth

Mammography reduces mortality and incidence of late-stage breast cancers in older women. Studies have shown there is sufficient availability of mammography in the U.S.; however, little is known about geographic variation in capacity. The purpose of this study was to determine the locations and extent of over/under supply of mammography in 14 southern states from 2002-2008. Using the two-step floating catchment area method, we calculated spatial accessibility at the block group level and categorized the resulting index to represent the extent of under/over supply relative to the demand for services. Results show decreasing availability of mammography over time. Reductions occurred primarily in areas with an oversupply of machines, a possible result of market forces. However, there was a 15% increase in the percent of women living in poor capacity areas from 2002-2008. Results from this study can assist policymakers and providers with resource allocation and business planning decisions.